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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b22f4373b63e90dd875995e703ec41961735224610c6836ccf592400eca62003' 
  AND token = '9FubFW26qt2aYL3vRySXKX4j5xuvhYHwkRGpRA+fAu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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