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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce311da992d46ec11634777f4ddf6b8f3000ead9e7d31c6899e1c1fb67dc7551' 
  AND token = '7rypg1bRvBF/D6zMJuRYeBoXFQ+n00g19PFFZo6xdoc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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