Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '40a399491c49f3d4206f9956deb81f3fe2e03d16633f0e1bebf88353281e52ae' 
  AND token = 'uEyHA4Jz6B6mxkzVSLuncD6ppbmq860VaHz9ZN/W0pY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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