Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9517752f680ad7b96d186730cf538ae832c487440aeaaf471342e6dc769d290' 
  AND token = '97HrmiCB0gvUN7XUnKJXOdIZ6EFlJixIBQxD8uo7cP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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