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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0224fd8c4e35d84afe61d56520d48d790441f852f17a600b7bda8ff4a70e88a1' 
  AND token = 'L/T6a5Erb0HK1H1tiiu0ea+FedwYEDVwQK1FuSY0gpw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}