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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25e96ecd90e7b890164b4767faa27107633e779d937e1dca582cab66eaa61811' 
  AND token = 'd56XIfin4SutJ0+HG5b70VeomKizYVSsZzcUQHM0me8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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