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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60fca23ff355b2a74380a2e3e8dea605a602241f508e779559e75d6682574375' 
  AND token = 'duDB3ryfhuXkYdTlhToMclnh1FfwV+ozQ/tk2RbYOpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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