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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0134e476c5974e3a8bef7415d6dd37ef857c87ed94d0b496d2012f729e4223cf' 
  AND token = 'OD6TelNA8cVtaH4jsSw4QDfoUhtvr17m2VJ70972cIY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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