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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf58a1704ae11c1efab194ebe7f31c131caf78ebe0cd2b8a9fd984e7a486f9f8' 
  AND token = '1Y6eWnFIfdrGl59Lf/EpX2dltyhw10CllU+WRmPbR7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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