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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bed4bce1e5cbecab4ada20ecf07a42dd0951c2fe88bb6f3d4651a7f48ba5a4f5' 
  AND token = 'hVa4Gt7jrF/oj7EydsIRvqS3ZMsgdNDkwDaYAfGkc/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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