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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ea5ab73823a3652dabddbc1db1d7d10a593f26cc5edd50c2905f1e59105b34f' 
  AND token = 'EVSTcicNdtsLeP9SQRPvYxbP62Tcyuh1ksG6NXFagJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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