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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0b016828c7d031a04a0e6d4ab628c322e493212e1162976032975c780d08a2b' 
  AND token = 'yqda/CAxE1nY85N0UBEOe6Clqoj/VJcd+jF+PPprn9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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