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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f441a87bd27f121cb95c00e51fa55a61347a2a6d3910c06d9f83d88ceebf5e30' 
  AND token = 'Tj/QpjCdGO591sWY/id03Ql9RrUXLUW+xFBWIBxu4dc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00094

JSON explain

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