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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aeeb2fe826376cf122fca027b01dc1b038ff9b879b078216df18ab320ebb02c9' 
  AND token = 'URbYeAAa25vhQegLKKaaVC2h1eU0VD1s3qf/ebpsrck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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