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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e2260cae741a33e67c8bfe39c4a8a92407ce11e9caa1dcc8a1538db6879b684' 
  AND token = 'rdic0W6oVPub+x/vcKsYALQcA38e2Y6OnYbIRwmQoME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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