Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbea11b4b5d8728f41c9f04f5d2a740734873154922330df30cb242f5fbaeade' 
  AND token = 'sgjUbsChlroW3JWh0H49+cTivvPOU9n8nKSTuIL63O4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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