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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92d1f602f570f992eab131a8c08411fdd547c33f7e5c6331ab01d000e7c5086e' 
  AND token = 'I5RfzJ02eogbTsGTWueAR/dUtU8FBGNcf+wa3skXdwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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