Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0e2f49843571a7c73b74e49afd2ebcae52515c8cbf2508a129c74aa0abbc97f' 
  AND token = '1faant9tEyf7cmIRKPGjbebB9ivl8Fusq+Q8a0Ii/nI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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