SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd9e7815877effd589281d74233cfb88d46fa33f00594667b2871beaa6e22ce1e' 
  AND token = 'CcmHdiH1Yq7zIWLj4JpsR/HXPU+5Z7qX3VWxuPUFUnY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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