Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'faaa124718b3faba4d763154f4acf8f2a57ffcf8d253716fa0f07e30904b29cc' 
  AND token = '5zMTxcKepZP30phdMdZU8OU44Bb6ScKXSmjyk2p4Gks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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