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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7532f2bac79a3e14240a982c76c849982f578665dddd5bac8f7d168feb25a05e' 
  AND token = 'c/lS5ARHXlJHUC1HM2HAO+PcUHBfw2lnU8OXtxGd1zg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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