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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e2387201f7fedafe75870ff633474fff7e250693ec7cfcab61191f61c26246ed' 
  AND token = '+166TkF6+enNjB4Xcd6yyNfMjWPiUCI89YYe4F9rLDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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