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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4f062e8e798b7442bdcd8a8a8fbb69aee7cb098f09aae1503c4ab7585f748c0' 
  AND token = 'GwNGL5h17S5Js5BTqPCovvDsJfyCAt4TdIVXKpwdFmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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