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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '898262cc6091d92b92dbb2febaed043f0c3bc34761d844ee6a697433411f8a73' 
  AND token = 'O58z3i04dK0vye5E1CocHC93yNRCpN9TN8GP7cMqW80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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