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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97a233ef756360bf4f7fd6ff77f36c605cd3b992224aeca33fe575ae824c7972' 
  AND token = 'V1GqwKHcm7V8fo1w/nTi0HdFaq49POJhOFuhQipH8AQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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