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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb62b508b5f824844ac0ea7316260f31fc4218db219212520d33fe00a3974069' 
  AND token = '/KGxqkS9P41V1p8jXS9AyoBt91h1W7D4qcWUAZx8iig=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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