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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b5262d825bd02e3d3bed02a5ff06d541801b3905a983e8ba155de02e103bfa24' 
  AND token = 'uyG7Quvd7eTN8Xf0jv5qy/DCFgLDoW7BkSwV+YdTINs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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