Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fee4d073e1d5b1697dd0b5e3d4175ef9d0bd740791fea2d7c2c5c455e8fb5506' 
  AND token = '2Y9q/75UEz5YMhK6MPMAbgKJWp+cg4HfFb8cXr7RyfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}