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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '60cc96a1331ccd46821aa9fafcf6045de335e23f296873df85ea3f402d8eaab4' 
  AND token = 'ldkaeqsAdW7RBnL0cX4rA6DPBCRigKjO0I3huYVdEcU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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