SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '362ba46e8f0cdc8f5300873f00653807c66b0b9c770fb56a68ce15ea257d8f96' 
  AND token = 'PEfGTzvWhVNjEMHNWMLCd9p9VdCp2+ZYSFM6oauRSjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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