Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f1b3b29ca68414baaa4b9db14a738f959187eb519f43644ba4e840a41767101e' 
  AND token = 'gWN1I5IUJQHGtTM8E7BAeamOivXo2zKkyulY/Y6nnMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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