Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f422c02af947b281492c121e9971ed2e350911e2f63a5f4dd9fd59cefe0acc5e' 
  AND token = 's3/pKVlelRAriqjEHcpFCGt8yQkVExaAw/ExX34/8ck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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