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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '25a398c449c831c5f2426aac65737c3481a7966f05efc7115e136862e10d949a' 
  AND token = 'n4OrncSnxH7cw3lWftNWNFxA34GtpnjRPz//ZehB5g0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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