Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '075aeb97978d6e2b1f81eace87db334c48797e63cd3fe43a4b0abf4cc241c8f7' 
  AND token = 'EdvZWMmdudYbuH5wzCJppvIGYiROQ9f7KO1JYsr0H0E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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