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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9270f344477cd138d85191d66b0a5706264c30a60156e24dc9a37e639c72ef88' 
  AND token = 'R6O7HwnZWaH/do+4UNSjtruKMex0D0wkS5An7c7LvNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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