Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00a5857d68b00a17666ea62a17c486c283858bcd5e5989cd72144cbd5944b04d' 
  AND token = 'R+xf7p0G4vFPjG+QXnSSF+KuRmJPzyoMpY9U3J70o5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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