Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9622d6fd87c555ac0daf94a04dc0133f011a3bc2db556a3f28a9c85bb972260' 
  AND token = 'RS6dG58uvQ5oGtkBudQU8T4Pc9n7p73YR6Nzi82mHmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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