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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60ae6d4fc86f616e9deeeba6194a899d461b8ea99f7a1cf669c1ebcf17c5c48f' 
  AND token = 'dHemlWKoEqA26gHzxcE1d199QTWeYJxiUZI94cJhXF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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