Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ece5427dd966c80fddbe0db6750a585854b8b39d5bae00beae203f9c8e2d6e98' 
  AND token = '5ukrHjhJvjRCng/OHUoO2RwHs3TGPn8i3JWrzt40j9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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