Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '727f599e54567d5dda1f34ed1015f93c792085fe0029d1d12a812c0c2883c6e9' 
  AND token = 'S2O1DydEQ0kmMRSuxwORHgb/OLG4UR0AVbyDXzjsPec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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