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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8043672b85f8315960c4e82d6305db9dff21f1d857c7e59d4980fd1aeae769ae' 
  AND token = 'HBHVyCZt0Ls5IVIqgfygU5clSRl/rX/BfURqfFxxRPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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