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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72fe797a1915c1c5464bf553c6287c6404f28dfd2b2e7cd0fa3b727ec2fe3a92' 
  AND token = 's/3/ba3HbDL5MEW48YgvLDMuukFTI+FEdyx1tmdkkgA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00081

JSON explain

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