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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '040235fa44aa5840c5e1420fe54fbc5601654f72eff24dcd842552bd6408f44e' 
  AND token = 'oPF2FjNas2ZcnRlfuLSXl8bNYKPA/ooj9tL0WOTkukk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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