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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '741c2582a8b73261319fe3372a77a806919d0732688287c2f47f9b693525fffb' 
  AND token = 'NTif7p1wjsTjzh7Fzc0IRKV7pxjdRbDZ6ldNJoR3FVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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