Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '153ce29e3619708cf533471d80aaa637f647eb7268deb3a8a22cd398f90727ea' 
  AND token = '/2mkwQCB4hdXXs/nGTC+CjjUZBQ/O/Qc8U71mbuoRHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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