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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '145294acc174114686fa155dd6ae7c5d4a4be8424d9ace640ba567b8e7c694eb' 
  AND token = 'd/CLz/Nq1o1YVNJBEyKxnPcG1rZOH1ymOqAHnYvDv9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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