Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a9d3e3c97e7c11b3763403b24db43d6185169fa6816eaa0704bbcd0944bc1f83' 
  AND token = '1JF7vp+y9X1/g/dsL5kwH1Rqehtsiqw8IE5X029P9w4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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