Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '043366f0e0c86258e62e4f27bcd82912fbfc6d350c0ef07edb32453b6c7f7d73' 
  AND token = 'gSW2EscpDpH8RbYxsBa8ZnYZX15a/BPk050ErQ8n2eE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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