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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd2b5cab0b7ffee7de66593cc842c3c2b7965c2f9cd24783428387e212757700' 
  AND token = 'uZl+ajgmBCJLNJAcRt2eSiiygj8kEA/hxd9qEduGtvM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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