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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dbabbc222f5e3178029502dca3f4cd957f7085517392cad6da96f06a24655724' 
  AND token = 'K9LqYwdytc7uhrvJL8Aw5DX47NirsRzkP0VNr8bHA0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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