Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ada2c4a27f91f72e59f97ae5f5d12f8120fa8a5123c2cca891e6318ece795c20' 
  AND token = '1WpsRP4cxsO6KEF6AKjINPdRg5J44mGnLID8sa9ZVeE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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