Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '23a28f9495c1c0b11174f0dada1731cd8f0983748afe3060ce0da8fe68e0959a' 
  AND token = 'lsRDgb3izdO0r/JW5GRnHvb361exHYOYFAfyUfBX4NQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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