Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8fa4e1afc01aac53cb996cb05863db6413bd00c05c09d60979dbd23d795b2da0' 
  AND token = 'ZVFFS+pACFdDvQ1Gd50GSe2v1cfdwbTyBeqBMkpHug0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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