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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65fd899c41acfebbed68b80bb90fa91916dd69bc13291cd205fe6e2c7307db83' 
  AND token = 'nRtAexJGlJzRQ66EoTUO5g1/qqYh33l4MF9YnqhG9Cw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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