SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eac56ed9e01ba2135558ca62f60fe0d23dce81740c8eb4bab9cf4dd53346ebed' 
  AND token = 'B0Y4tk2z05bNG8n8oWJoBi64QYxo3iI4J+ekA+3ooc8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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