Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '469c4c9bbcecb5236632cf8c1e60042025bfde107b115e04539ab8a5f6a6dd3b' 
  AND token = 'FOfoyAKm3Wk6don6PgYzwuUcAoJcVId8py4Th9owKNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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