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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9a2244d32e96b3b8f50c910008e3aeb07cdb2bc9f277c1a106d839cc368ff69' 
  AND token = '0z73C38oCWMand/ctTCjbCHH2ueet47qkvyIV13XnLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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