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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0e3bb32ea841e3f89f1fd304688a2fc4f9eec62109c3592df2bd69bf3480fcea' 
  AND token = '1lAz0CfXXv2NcdE4q/bFd5QfDgMDaPVeW4E58QqYBdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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