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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '577935e060d1c5091c81d6894d0a6f6477d7afd1e97fca77e8d89d578591d362' 
  AND token = 'ZXLuB6gyrVGa8J805wmBcfmFaUkoprSeOyKu/RsalT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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